shaders: Implement particle shaders.

cs/resources/shaders/gl/iostructs/p_particle.h

@@ -0,0 +1,33 @@
+
+struct 	v2p
+{
+	float2 tc0;		// base
+	half4 c;		// color
+//	Igor: for additional depth dest
+#ifdef	USE_SOFT_PARTICLES
+	float4 tctexgen;
+#endif	//	USE_SOFT_PARTICLES
+	float  fog;
+};
+
+layout(location = TEXCOORD0) 	in vec2	tc0;		// base
+layout(location = COLOR0)		in vec4	c0;			// color
+#ifdef	USE_SOFT_PARTICLES
+layout(location = TEXCOORD1) 	in vec4	tctexgen;
+#endif	//	USE_SOFT_PARTICLES
+layout(location = FOG) 			in float	fog;
+
+layout(location = COLOR0) 		out vec4	C;
+
+half4 _main( v2p I );
+
+void	main()
+{
+	v2p I;
+	I.tc0		= tc0;
+	I.c			= c0;
+	I.tctexgen	= tctexgen;
+	I.fog		= fog;
+
+	C = _main(I);
+}

cs/resources/shaders/gl/iostructs/v_particle.h

@@ -0,0 +1,51 @@
+
+out gl_PerVertex { vec4 gl_Position; };
+
+struct vv
+{
+	float4 P;
+	float2 tc;
+	float4 c;
+};
+struct vf
+{
+	float4 hpos;
+	float2 tc;
+	float4 c;
+
+//	Igor: for additional depth dest
+#ifdef	USE_SOFT_PARTICLES
+	float4 tctexgen;
+#endif	//	USE_SOFT_PARTICLES
+};
+
+layout(location = POSITION)		in float4 P;
+layout(location = TEXCOORD0) 	in float2 tc;
+layout(location = COLOR0)		in float4 c;
+
+layout(location = TEXCOORD0)	out vec2	tc0;		// base
+layout(location = COLOR0)		out vec4	c0;			// color
+#ifdef	USE_SOFT_PARTICLES
+layout(location = TEXCOORD1)	out vec4	tctexgen;
+#endif	//	USE_SOFT_PARTICLES
+layout(location = FOG) 			out float	fog;
+
+vf _main( vv v );
+
+void	main()
+{
+	vv I;
+	I.P	 = P;
+	I.tc = tc;
+	I.c	 = c;
+
+	vf O;
+	O = _main(I);
+
+	tc0			= O.tc;
+	c0			= O.c;
+#ifdef	USE_SOFT_PARTICLES
+	tctexgen	= O.tctexgen;
+#endif	//	USE_SOFT_PARTICLES
+	gl_Position = O.hpos;
+}

cs/resources/shaders/gl/particle-clip.vs

@@ -1,21 +1,15 @@
 #include "common.h"
+#include "iostructs/v_particle.h"
 
-out gl_PerVertex { vec4 gl_Position; };
-
-layout(location = 0) in vec4 	P;
-layout(location = 1) in vec2 	tc;
-layout(location = 2) in vec4 	c;
-
-layout(location = 0) out vec2	tc0;
-layout(location = 1) out vec4	c0;
-
-void main ()
+vf _main (vv v)
 {
-	float4 hpos	= mul	(m_WVP, P);		// xform, input in world coords
-	hpos.z		= abs	(hpos.z);
-	hpos.w		= abs	(hpos.w);
-	tc0			= tc;				// copy tc
-	c0			= c;				// copy color
+	vf 		o;
+
+	o.hpos 		= mul	(m_WVP, v.P);		// xform, input in world coords
+	o.hpos.z	= abs	(o.hpos.z);
+	o.hpos.w	= abs	(o.hpos.w);
+	o.tc		= v.tc;				// copy tc
+	o.c		= v.c;				// copy color
 
-	gl_Position = hpos;
+	return o;
 }

cs/resources/shaders/gl/particle.vs

@@ -1,32 +1,20 @@
 #include "common.h"
+#include "iostructs/v_particle.h"
 
-out gl_PerVertex { vec4 gl_Position; };
-
-layout(location = 0) in vec4 	P;
-layout(location = 1) in vec2 	tc;
-layout(location = 2) in vec4 	c;
-
-layout(location = 0) out vec2	tc0;
-layout(location = 1) out vec4	c0;
-//	Igor: for additional depth dest
-#ifdef	USE_SOFT_PARTICLES
-layout(location = 2) out vec4	tctexgen;
-#endif	//	USE_SOFT_PARTICLES
-
-//uniform float4x4 	mVPTexgen;
-
-void main ()
+vf _main (vv v)
 {
-	float4 hpos = mul	(m_WVP, P);		// xform, input in world coords
-//	float4 hpos	= mul	(m_VP, P);		// xform, input in world coords
-	tc0			= tc;				// copy tc
-	c0			= unpack_D3DCOLOR(c);				// copy color
+	vf 		o;
+
+	o.hpos 		= mul	(m_WVP, v.P);		// xform, input in world coords
+//	o.hpos 		= mul	(m_VP, v.P);		// xform, input in world coords
+	o.tc		= v.tc;				// copy tc
+	o.c		= v.c;				// copy color
 
 //	Igor: for additional depth dest
 #ifdef	USE_SOFT_PARTICLES
-	tctexgen 	= mul( mVPTexgen, P);
-	tctexgen.z	= hpos.z;
+	o.tctexgen 	= mul( mVPTexgen, v.P);
+	o.tctexgen.z	= o.hpos.z;
 #endif	//	USE_SOFT_PARTICLES
 
-	gl_Position = hpos;
+	return o;
 }